I've added paste.server_factory-compliant factories as well as respective egg entry points for each server within flup. Thanks to Luis Bruno for providing the code.
Additionally, each server now accepts a 'debug' bool keyword, which is True by default. It affects the output of the server-level error handler (which really shouldn't be used, but it's there if you're lazy like me ).
Though I just noticed that PasteScript already includes server runners for the flup servers...
Yeah, I guess I really should have submitted that... I think when I wrote it, flup wasn't using setuptools, so it couldn't have an entry point. But yeah, it certainly is better in flup than PasteScript.